I - Mission Critical Classified
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000516-DNS-000090
<GroupDescription></GroupDescription>Group -
Digital signature algorithm used for DNSSEC-enabled zones must be FIPS-compatible.
<VulnDiscussion>The choice of digital signature algorithm will be based on recommended algorithms in well-known standards. NIST's Digital Sig...Rule Medium Severity -
SRG-APP-000516-DNS-000091
<GroupDescription></GroupDescription>Group -
For zones split between the external and internal sides of a network, the RRs for the external hosts must be separate from the RRs for the internal hosts.
<VulnDiscussion>Authoritative name servers for an enterprise may be configured to receive requests from both external and internal clients. ...Rule Medium Severity -
SRG-APP-000516-DNS-000092
<GroupDescription></GroupDescription>Group -
In a split DNS configuration, where separate name servers are used between the external and internal networks, the external name server must be configured to not be reachable from inside resolvers.
<VulnDiscussion>Instead of having the same set of authoritative name servers serve different types of clients, an enterprise could have two d...Rule Medium Severity -
SRG-APP-000516-DNS-000093
<GroupDescription></GroupDescription>Group -
In a split DNS configuration, where separate name servers are used between the external and internal networks, the internal name server must be configured to not be reachable from outside resolvers.
<VulnDiscussion>Instead of having the same set of authoritative name servers serve different types of clients, an enterprise could have two d...Rule Medium Severity -
SRG-APP-000516-DNS-000095
<GroupDescription></GroupDescription>Group -
Primary authoritative name servers must be configured to only receive zone transfer requests from specified secondary name servers.
<VulnDiscussion>Authoritative name servers (especially primary name servers) should be configured with an allow-transfer access control sub s...Rule Medium Severity -
SRG-APP-000516-DNS-000099
<GroupDescription></GroupDescription>Group -
The Windows 2012 DNS Servers zone database files must not be accessible for edit/write by users and/or processes other than the Windows 2012 DNS Server service account and/or the DNS database administrator.
<VulnDiscussion>Discretionary Access Control (DAC) is based on the premise that individual users are "owners" of objects and therefore have d...Rule Medium Severity -
SRG-APP-000516-DNS-000101
<GroupDescription></GroupDescription>Group -
The Windows 2012 DNS Server must implement internal/external role separation.
<VulnDiscussion>DNS servers with an internal role only process name/address resolution requests from within the organization (i.e., internal ...Rule Medium Severity -
SRG-APP-000516-DNS-000102
<GroupDescription></GroupDescription>Group -
The Windows 2012 DNS Server authoritative for local zones must only point root hints to the DNS servers that host the internal root domain.
<VulnDiscussion>All caching name servers must be authoritative for the root zone because, without this starting point, they would have no kno...Rule Medium Severity -
SRG-APP-000516-DNS-000103
<GroupDescription></GroupDescription>Group -
The DNS name server software must be at the latest version.
<VulnDiscussion>Each newer version of the name server software, especially the BIND software, generally is devoid of vulnerabilities found in...Rule Medium Severity -
SRG-APP-000516-DNS-000113
<GroupDescription></GroupDescription>Group -
The Windows 2012 DNS Servers zone files must not include resource records that resolve to a fully qualified domain name residing in another zone.
<VulnDiscussion>If a name server were able to claim authority for a resource record in a domain for which it was not authoritative, this woul...Rule Medium Severity
Node 2
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